21219786

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{769}}^1$

素因数の和:860

約数の個数: 64

約数和(自身を含む): 54700800

約数和(自身を除く): 33481014

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 73, 126, 146, 189, 219, 378, 438, 511, 657, 769, 1022, 1314, 1533, 1538, 1971, 2307, 3066, 3942, 4599, 4614, 5383, 6921, 9198, 10766, 13797, 13842, 16149, 20763, 27594, 32298, 41526, 48447, 56137, 96894, 112274, 145341, 168411, 290682, 336822, 392959, 505233, 785918, 1010466, 1178877, 1515699, 2357754, 3031398, 3536631, 7073262, 10609893, 21219786]

約数ペア:

[(1, 21219786), (2, 10609893), (3, 7073262), (6, 3536631), (7, 3031398), (9, 2357754), (14, 1515699), (18, 1178877), (21, 1010466), (27, 785918), (42, 505233), (54, 392959), (63, 336822), (73, 290682), (126, 168411), (146, 145341), (189, 112274), (219, 96894), (378, 56137), (438, 48447), (511, 41526), (657, 32298), (769, 27594), (1022, 20763), (1314, 16149), (1533, 13842), (1538, 13797), (1971, 10766), (2307, 9198), (3066, 6921), (3942, 5383), (4599, 4614)]